ESIE15-08B
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Part 3. Repair
2. Unit specific repair procedures Monobloc CA
19/07/16
Page 127
Daikin Altherma Monobloc CA
2.2.8. Replacing the 4-way valve coil
2.2.8.1 Preliminary actions
1.
Switch off the Daikin Altherma Monobloc CA via the user interface.
2.
Switch off the Daikin Altherma Monobloc CA with the field supplied circuit breaker.
2.2.8.2 Procedure
Removal
1.
Loosen and remove the screw (1) that fixes the 4-way valve coil (3).
2.
Cut the tie wraps that fix the 4-way valve coil wiring.
3.
Unplug connector S80 from the PCB2 inverter board.
Figure 18 - Removing the 4-way valve coil
Installation
1.
Proceed in reverse order.
2.2.9. Replacing the 4-way valve
2.2.9.1 Preliminary actions
1.
Switch off the Daikin Altherma Monobloc CA via the user interface.
2.
Switch off the Daikin Altherma Monobloc CA with the field supplied circuit breaker.
3.
Recover the refrigerant, refer to
"Refrigerant recovery" on page 106
.
4.
Remove the switch box, refer to
"Replacing the switch box" on page 117
5.
Remove the compressor sound insulation, refer to
"Removing the compressor sound insulation" on page 114
6.
Connect a nitrogen hose to the outdoor suction service port.
7.
Attach a hose with core-depressor to allow the release of the nitrogen.
W
ARNING
: R
ISK
OF
F
IRE
•
When reconnecting a connector to the PCB, do not apply force or damage the connector or the connector pins on
the PCB.
1. Screw
3. 4-way valve coil
2. Tie wrap
3
3
1
2